Talking-machine record.



T. RAIE.

TALKING MACHINE RECORD. v

ufPLlc/Tiou FILED 1An.a1.1s17.

1,275,087. Patented Aug-.6,1918.

.Z'yl

INUENTOR.

of the United States, residing at Los UNITED sTATEs PATENT oEEIoE. f

THOR RAJ E, OF LOS ANGELES, CALIFORNIA.

TALKIN G-MACHIN E RECORD.

T allwhom it mayconcern: y v

Be it known that `I',`THon RAJ, a citien ngeles, in the county of Los Angelesand State of California, have invented a new and useful Improvement in Talking-Machine Records, of whichV the following is aspecifial tion.- A

My invention relates `to talking machines and particularly to an improved form of 4record for use in connection with such machines and the ,primary object sis t provid@ a reeord of such -form that a ater length of groove may be provided, t us permitting the rendition of compositions of greater length than usual on other types of records.

Talking machinesof the well knowntypes l are usually adapted for playing records of machines and ln'ofiices and places *ofbusly 'ness are relatively short 'and small in di;

'the disk andA cylindertypethe disk'jnachin'es ,having grown ilntom'ore general *favor 'in the recent years. The cylinder records whichare' usually employed in the-cheaper ameter, and the length of the compositions which may. be reproduced" thereon are ncessaril-y limited. r-Ihe record grooves in the `disk type ,of records decrease in diameter'V gradually as thereproduction of the composition progresses and thus, the'speedof the diskbeing always the same, it is obvious that the groove speed will be greater near the peiph'er of the disk than at the inside and willy-'gra' ually decrease as the needle of the reproducing element Ymoves toward the center of the disk. This',`of course, causes a 4`ct')r1"esponding change 'in the speed of vthe lclompositionfand in many cases 1s unsatisi A further object of this invention, is therefore, .to provideya record of such form that ai maximum groove surface may be provided` thereon and with the use of which the speed of the reproduction will beuniform throughout thelength thereof.

A further object is lto provide a form of reoordwhih ,is capable. of use in series ona common mandrel ordrum so that a lengthy composition l -may be played Vcontinuously from'the series of records,as the reproducing needle progresses from one to the other ofi the series, or,`severa1 compositions may be played inconsecutive or selective `order without i'nttn'ruption,` at the-will of the operator.

vq'peclcation of Letters l'atent.

Application filled January 31, 1917. `Serial No. 145,774.

face.

Other objects `may "appear as the description Y Patented Aug. 6, 191e.4

Referring tothe drawings, Figure 1 is an end view of one of my improved records in position on the drum. Fig. 2 is a fragmentary longitudinal` section of several records in position on the drum and arranged for continuous or'series playing. Figs. 3 and 4 are views similar to, Fig. 2 but showingdifferent forms of records and modifications thereof', yh in sdm iistances to greater advantage than the fourni shown in Fig. 2. Fig. 5 is a lopgi- 4ters Patent (ifthe UnitedStates, filed August 17, 1916,-Serial Numberl'lAOQ, in

which application the'orm of record herein so described is clearly shownI and described.

.This application is a continuation in part ofthe former application.

My improved records. 1 4are of annular form and in comparison with the old style cylinder records are relatively .narrowl as to` The diameterof the records is suflicient to insure several times the length of the grooves as compared with the old records. my improved records may be mounted in playingl order upona single drum or 'mandrel 2 so` that the needle of the reproducing element 3 may pass from one to the other of the records 1 in continuous or selective D5 order'. The reproducer 3 ris movable longitudinally of the drum 2, 'as `described and shown in my former. application.

As shown in Fig. 2, one end of each. ofthe records 1 is beveled, as at 4, and the'oppqsite m0' ends are provided with recesses 5 which are beveled to conform to and are adapted to ceive the beveled ends of the adjacent onds. This. form of record face will realli permit the' travel of the reproducing from hone to the other of the records and t joints between the records will not inte 1 with the movement of the needle. The l y f i central' openings 6 in the records iit snu Y. overthe periphery of thedrum 2 and' a cov- 110 ering 'of felt orlike substance 7: may be f vided for the drum so as wlfrictionally old rich .may be loptionally employed g5 eference is' had in the considerationof 75V -thls invention, to a' talking machine of my .inventiom for which I have-applied forLet- As shown in Fig. 5, a pluralityV of 90 the records in position on the drum in a ,manner similar'to that employed on the Well known type of disk talking machines.

In Figs. 3 and 4, a modification is shown, 5 in which the playing faces ofthe records 1 areslightly taperedy from one to the other end and the rear ends which are of thesmallest diameter 'fit into Vthe recesses 8 in the front ends 9. In this form of record a 1'0 curved shoulder is provided on each of the records above and covering the joint b etween it and the adjacentA record, so as to prevent Vthe interruption to the passage of the needle over the jointsf The joints between the records may be sliding as shown in Fig. 3, or, they may be threaded as shown in Fig. 4.

It 1s obvious that the horizontal faces of the records, as shown in Fig. 2 will rovide a uniform rate of s eed for the rendltion of any composition, W ile the slightly tapered faces of the other two forms will slightly vary the speed as the needle moves from leftv to right over the faces of the records. This variation, however, will be so slight that it will scarcely be appreciable and either of the lforms may be employed with equally good,

results, or nearly so.

My records may. be used in machines which will but-slightly, if at all, increase the size of the case overv that of the generally used talkingmachines in which but a single record may be played at" a time. As stated, a substantially longer groove. length is provided on the annular type of record than on either the disk or cylinder types and longer com ositions may be played, while the form o the record permits a relatively large number of the records to be held for consecutive or selective use in a single-machine, thus providing the maximum playing capacity in the minimum space.

In the use of the disk type of talking machine, the rate of progress of a composition varies accordin to the position of the reproducing need e on the face of the disks, and as a minimum rate of s eed is provided -as-`the needle approaches t e center of the disk, it Wouldseem thatthe maximum speed attained as the needle approaches the periphery of the disk` is' unnecessary.` A record,therefore, of the annular typeas drel longitudinally t ereof,

1. In combination with a horizontally dis- I posed mandrel of uniform diameter,a pluralit-y of, relatively narrow record rings mounted on said mandrel, and having abut-- tin edges, each of said rings having an annu ar projecting lip overlying the meeting edge o side, whereby a needle moving upon one rinji is 'transferred to the next adjacent ring at a point inwardly from its edge, said record rings being provided with records in their faces, substantially as described.

2. In combination with a horizontally disposed mandrel of uniform diameter, a plurality of relatively narrow record rings mounted on said mandrel and having abuttinlg edges, each of said rings having an annu ar projecting lip overlying the meeting edge of the next adjacent record ring on one side, whereby a needle moving upon one ring is transferred by said lip to the next adjacent ring at a point inwardly from the edge thereof, said record rings having outer faces disposed at a sli ht angle to the manand having record grooves therein.

3. A reproducing record comprising a record ring substantially square in cross section and provided at one edge with an annular projecting lip tapering inwardly from the outer surface thereof, and adapted to overle the edge of an abutting record ring fitting tl1ereinto,.the outer surface .of said ring and the surface of said lip being prothe next ad] ac ent record ring on onevided with a record groove, substantially as described.

Signed at Los' Angeles, in the county of Los Angeles and State ofv California, this` 3d day of January, 1917.

j THOR RAJE. Witnesses:

.JOHN P. BURRows, Jr., CARL W. BECKMAN.. 

